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Conferences > CLEO_SI > 2023 > SF2I > SF2I.4

Ultrafast Modulation of Polarization in Spintronic THz Emitters Enhanced by Field Induced Spin Reorientation Transition

Geoffrey Lezier, Pierre Koleják, Jean-François Lampin, Kamil Postava, Mathias Vanwolleghem, and Nicolas Tiercelin

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Abstract

We demonstrate an efficient and simple modulation of the polarization in Spin-tronic Terahertz Emitters, by rapid switching of the magnetization using high-frequency magnetic field, enhanced by field induced Spin Reorientation Transition (SRT). The instability of the magnetic layer at the transition allows for a higher sensitivity of the magne-tization and an efficient switching at lower power of the polarization at frequencies up to 100kHz.

© 2023 The Author(s)

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